Manuscripts
Y Canyon
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Across Surprise Valley to Cataract Canyon and Y and Cross Canyons. The tilt block opposite the mouth of Y Canyon is left of center
Manuscripts
mssMarston papers V008/0100

Down Cataract Canyon from Mile 209.5. Y Canyon is the first canyon on the left and Cross Canyon is just beyond
Manuscripts
mssMarston papers V008/0164



